Remove/Install Hand Detection Control Unit - AR82.90-P-0201SA

Model 223 

with code L2B (Leather luxury steering wheel) 

except code L5C (Supersport steering wheel - leather deep-embossed) 

Model 223 

with code L2D (Luxury leather steering wheel with trim element) 

except code L5C (Supersport steering wheel - leather deep-embossed) 

Model 296, 297 

with code L2B (Leather luxury steering wheel) 

except code L5C (Supersport steering wheel - leather deep-embossed) 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove driver's airbag from steering wheel.	Model 296, 297 with code L2B (Leather luxury steering wheel) except code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0663EQS
		Model 223 with code L2B (Leather luxury steering wheel) except code L5C (Supersport steering wheel - leather deep-embossed) Model 223 with code L2D (Luxury leather steering wheel with trim element) except code L5C (Supersport steering wheel - leather deep-embossed)	AR91.60-P-0663S
2	Remove bolts (1).	Screw, mounting plate/contact plate to steering wheel	*BA46.10-P-1002-02J
3	Remove mounting plate (2) and release and disconnect electrical connector.	Ensure correct engagement of electrical connector.
4	Remove washers of screws (1).	If washers are installed.
5	Unclip hand detection system control unit (N179) from steering wheel electronics (N135).
6	Release and disconnect electrical connectors (3) at hand detection system control unit (N179) and remove hand detection system control unit (N179).	Do not crush or kink or subject electric lines to tension. This will result in damage to the electric lines and can impair their function. Ensure that electrical connectors (3) engage correctly. Ensure that routing of lines is correct.
7	Install in the reverse order.
	Concluding tasks
8	Connect vehicle diagnosis system and perform commissioning.	When replacing hand detection system control unit (N179).
			AD00.00-P-2000-06FR
9	Perform function test of steering wheel buttons.